Incandescent-gas-light burner.



G. DALEN. INGANDESUENT GAS LIGHT BURNER.

APPLICATION FILED 0OT. 26, 1911.

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Patented Apr. 1, 1913.

GUSTAF nnnn v, or sTocKHoLi/r, SWEDEN.

Specification of Letters Patent.

Application filed October 26, 1911. Serial No. 656,895.

INCANDESCENT-GAS-LIGHT BURNER.

Patented Apr. 31., 1913,

To all whom 2"25 may concern Be it known that I, GUsTArDALN, engineer,subject of Sweden, residing at Odengatan. 104, 'Stockholm, Sweden, haveinvented new and usefulImprovements in In candescent-Gas-Light Burners,of which the following is a specification.

'gas is diminished.

. The present invention refers to an incandescent gas light burner inwhich the pilot flame is burning only when the main flame isextinguished, whereby the consumption of Several complicatedconstructions have been proposed for this purpose, which all havethe'view of keeping the gas conduit to the pilot burner closed, when theconduit of the main burner is open and vice versa, whereby the pilotflame is lighted by the main flame. By means of the present inventionsaid purpose is obtained in a very simple manner and without the use ofa special pilot flame.

The invention also has for its object means for keeping the pilot flameburning steadily and without fluttering.

On the drawings Figure l is a sectional view of a burner according tothis invention, Fig. 2 is a plan, and Fig. 3 is an elevation, showingthe use of the invention in connection with an apparatus for mixing gasand air.

1 indicates the incandescent body, 2 the incandescent -gas lightburner,.whieh is screwed in the pipe section 3, containing the from theoutside,

gas channel 5, connected with the gas conduit 4, and the shutting offcock 6. For supplying the burner 2 with the quantity of gas, intendedfor the pilot flame a by pass c0n duit 7 is connected with the gasconduit 1 or with the gas channel 5, opening on both sides of theshutting off cock 6. For adjusting the quantity .of gas flow a screw 8,accessible is inserted in the said by pass conduit 7.

It ought to be obvious, that when the cock 6 is closed, the burner 2 issupplied with the quant-ity'of gas flowing through the conduit 7, andthus a pilot flame corresponding to said quantity of gas,;is burning inthe burner 2.

In the end of the burner 2 two slots 9, intersecting each other at rightangles and communicating with the channel 5 are cut, as will be seen inFig. 2. In consequence of this arrangement the pilot flame will burnsteadily at the point 10 Where the slots intersect, instead offluttering so as to be extinguished at one point and again lighted atanother point, which is the case, if one single slot or more parallelslots are used.

In Fig. 3 14 indicates an apparatus of any suitable construction formixing combustible gas and air, 15 being the supply pipe of the,

gas and 16 the supply pipe of the air to said apparatus. 11 indicatesthe conduit for supplying incandescent burners with the mix ture of gasand air, and 12 indicates a by pass opening on both sides of a cook 13,inserted in the conduit 4. The burners are provided with a by pass pipe7 as described above, but said by pass may also beomitted. When the cook13 is closed the burners are supplied with a quantity of gas mixturethrough the by pass 12, sul'licient for keeping a pilot flame burning inthe main burners 2.

What I claim is:

A burner having a large passage to supply gas to a main flame, and asmall passage connected with the large passage to supply gas to a pilotflame, and a delivering tip common to'both passages, and provided withcrossed slits for delivering the gas in large quantities to the mainflame when the large passage is open, and for concentrating the flow ofgas at a single point to feedthe pilot flamealone when thelarg'eapassage is closed.

Intestimony, that I claim the foregoing as my invention, I have signedmy name in presence of two subscribing Witnesses.

GUSTAF DALEN, l/Vitnesses:

H. C. Coxn,

VICTOR TERBOSH.

